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    This study introduces a novel active millimeter-wave imaging system using structured illumination to enhance image resolution. The innovative approach achieves up to twofold resolution improvement, overcoming previous limitations in millimeter-wave imaging.

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    Area of Science:

    • Physics
    • Electrical Engineering
    • Imaging Science

    Background:

    • Structured illumination is a technique used in optical microscopy to surpass the diffraction limit.
    • Applying structured illumination to millimeter-wave (MMW) imaging has been challenging due to difficulties in creating precise grating patterns.
    • Existing MMW imaging systems face limitations in achieving high resolution.

    Purpose of the Study:

    • To propose and validate a resolution-improved active millimeter-wave imaging structure.
    • To adapt the concept of structured illumination for MMW imaging applications.
    • To develop an adaptive approach for rapid, multi-directional resolution enhancement.

    Main Methods:

    • Utilizing structured illumination theory adapted for MMW frequencies.
    • Employing antenna array synthesis to generate tailored fringe patterns for MMW systems.
    • Implementing an adaptive algorithm for generalized, fast resolution improvement.

    Main Results:

    • Demonstrated a novel MMW imaging structure based on structured illumination.
    • Achieved up to a twofold improvement in image resolution through electromagnetic simulations.
    • Successfully adapted structured illumination principles for MMW imaging, overcoming practical limitations.

    Conclusions:

    • The proposed MMW imaging structure effectively enhances image resolution.
    • Structured illumination, implemented via antenna array synthesis, offers a viable path to super-resolution in MMW imaging.
    • The adaptive approach allows for efficient, multi-directional resolution enhancement in MMW systems.